1051128313 has 4 divisors (see below), whose sum is σ = 1096829568. Its totient is φ = 1005427060.

The previous prime is 1051128283. The next prime is 1051128341. The reversal of 1051128313 is 3138211501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3138211501 = 101 ⋅31071401.

It is a de Polignac number, because none of the positive numbers 2^k-1051128313 is a prime.

It is a super-2 number, since 2×1051128313² = 2209741460780451938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1051128613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22850593 + ... + 22850638.

It is an arithmetic number, because the mean of its divisors is an integer number (274207392).

Almost surely, 2^1051128313 is an apocalyptic number.

It is an amenable number.

1051128313 is a deficient number, since it is larger than the sum of its proper divisors (45701255).

1051128313 is an equidigital number, since it uses as much as digits as its factorization.

1051128313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45701254.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1051128313 is about 32421.1090649287. The cubic root of 1051128313 is about 1016.7602941753.

Adding to 1051128313 its reverse (3138211501), we get a palindrome (4189339814).

The spelling of 1051128313 in words is "one billion, fifty-one million, one hundred twenty-eight thousand, three hundred thirteen".